using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Phonebook
{
    class PhoneBook
    {
        public List<Person> Contacts { get; private set; }

        public PhoneBook(List<Person> contacts)
        {
            Contacts = contacts;
        }

        //1. Add new contact
        public void AddContact(Person contact)
        {
            Contacts.Add(contact);
        }

        //2. Update contact phone by name
        public void UpdateContact(string name, string phoneNumber)
        {
            Person contact = GetContactByName(name);
            contact.UpdatePhoneNumber(phoneNumber);
        }
        //3. Search contact by name
        public Person GetContactByName(string name)
        {
            return Contacts
                .Where(contact => contact.Name == name)
                .FirstOrDefault();
        }
        //4. Search contact by phone
        public Person GetContactByPhone(string phoneNumber)
        {
            return Contacts
                .Where(contact => contact.PhoneNumber == phoneNumber)
                .FirstOrDefault();
        }

        //5. Print all contacts
        public void PrintAllContacts()
        {
            Console.WriteLine("----- PHONEBOOK CONTACTS -----");
            foreach (Person contact in Contacts)
            {
                Console.WriteLine(contact);
            }
            Console.WriteLine(new string('-', 30));
        }
        //6. Delete contact by name
        public void DeleteContactByName(string name)
        {
            Person contact = GetContactByName(name);

            Contacts.Remove(contact);
        }
        //7. Delete contact by phone
        public void DeleteContactByPhone(string phoneNumber)
        {
            Person contact = GetContactByPhone(phoneNumber);

            Contacts.Remove(contact);
        }
    }
}